Offsetting mechanism foe sawmill caeeiages



(No Model.) 2 Sheets-Sheet 1. P. J. BUCK. OFFSETTING MECHANISM FOR SAWMILL CARRIAGES.

Patented June 9, 1896.

Pm'w JB Wflorgays,

Wihyssa 2 Sheets-Sheet 2.

(No Model.)

Patented June 9, 1896.

Q 1 D 2 1 a a WJ I r w a NlTE-D STATES PATENT rrrcnl PHILLIP J. BUCK, OF THOMPSON, MICHIGAN, ASSIGNOR OF ONE-HALF TO JAMES B. FITCH, OF SAME PLACE.

OFFSETTING MECHANISM FOR SAWMILL-CARRIAGES.

SPECIFICATION forming part of Letters Patent No. 561,864, dated June 9, 1896.

Application filed December 23, 1895. Serial No. 573,097. No model.)

To aZZ 2072,0722 it may concern.-

Belt known that I, PHILLIP J. BUCK, a citizen of the United States, residing at Thompson, in the county of Schoolcraft and State of Michigamhave invented a new and useful Ollsettin g Mechanism for Sawmill- Carriages, of which the following is a specification.

The invention relates to improvements in offsetting mechanism for sawmill-carriages.

The object of the present invention is to improve the construction of offsetting mechanism for sawmill-carriages and to provide means for automatically offsetting and on setting a sawmill-carriage frame as the latter is moved from or toward a saw.

The invention consists in the construction and novel combination and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings, and pointed out in the claims hereto appended.

In the drawings, Figure 1 is a longitudinal sectional view of a sawmill carriage constructed in accordance with this invention. Fig. 2 is a transverse sectional view of the same. Fig. 3 is a detail view of one of the b rackets of the sawmill-carriage frame. Figs. l and 5 are detail views of the cam-lever. Fi g. 3 is a detail perspective viewof the automatic shifting device.

Like numerals of reference designate corresponding parts in all the figures of the draw in gs.

1 designates a sawmill-carriage frame dcsigncd to be constructed in the ordinary manner and to be mounted on the usual number of axles, end axles 2 only being shown in the accompanying drawings, and the wheels 3 and at of the carriage are of the ordinary construction, those at one side being preferably grooved, as shown, and employed in connection with the rail 5. The wheels at the other side of the carriage are provided with flat treads and are arranged on ordinary construction of rail.

The sawmill-carriage frame is provided at each end on the inner faces of the end bars with a bracket 3, having substantially horizoni'ally-disposed arms 7, carrying depending antifriction-whecls 8, which cooperate with a cam-head il of a lever 10. The lever 10 is com posed of two sections provided with similar perforated flanges 11 and secured to the axle between collars 12 by fastening devices 13. The collars are located at opposite sides of the cam -lever and are provided with clamping-screws 14: and are readily secured at the desired adjustment. The lower section of the lever depends from the axle to form an arm, the axle being the fulcrum of the lever, and the cam-head is arranged in the form of an arc. The cam-head is disposed slightly diagonally of the sawmill-carriage frame, and when swung in an arc is adapted to shift the framel laterally of the line of cut of the saw to offset to prevent a log, after the completion of a cut, and when the carriage is being gigged back for another cut, from injuring the saw or being injured by the same.

The sawmilh carriage frame is provided with suitable bearings 15 for the axles, and its transverse movement is limited by adj ustable collars 16, secured to the axles by clamping-screws and located at the inner sides of the bearings, as clearly shown in Fig. 2 of the accompanying drawings. The cam-head of the lever of the oifsettin g mechanism may be constructed and the collars 16 may be arranged to cause the smvmill-carriage to have sufificient movement to clear the saw completely.

The levers 10 are connected by a horizontal bar 17, pivotally connected at its terminals to the lower ends of the levers and ad j ustably connected with ablock 18, which is adapted to slide on the floor or other supporting-surface and to friction ally en gage the same sufficiently to cause the lower arm of the levers to swing backward or in a direction opposite to thatin which the saw-carriage is moving and to hold the levers in that position, whereby when the r of; nsett' gmechenisn r zontaliy and eonneete. meohen' lever the central section 19 mm whieh'are engaged bytheshonlders of the terminals 20 thereof The guides 21 eonsifst lot" vertical bars ris' from base-plates, olined braces '23 :and theypermit the block to; move vertically :toadjust. itself to them-- egualityof thesnrface overwhieh it slides, r The biook 18' may bemade of any Suitable V In ateriaii and is designed to have 5n fficient cause a positive 'shiftingof the off: 1 r V settingsm-eehenism as soon as the'direetionof thesewmiP-cerriageischenged, 1 I 1 It will be seen that-the offsettingme'chem k m: is simple and comparatively inexpensive; In CQIlStlllCtiQDythfit it'iS pOSitiVE ztndrel' T 'ablein operation, andthatitie reepehleef ano: 'eztliy offsetting I and onsettin-g a; sewnlill eerria e freme according togthedireotioir ehthe seme is traveling to cause, a log outward in position for want. I f hzmges 1 [the form; proportion, d 011 minor details: of construction may beresertedr Y thont epartingfrom the principle create mfiemgany of the advantegeeofthie ioverv Iecombinat ozn em sawlnilhearriage,

hardisposedhori- 1n and provid subetantiaflyns fescribed dependin g therefrom and provided above the same with cam-heads, connected with the sawmill-carriage frame and adapted to move the same laterally, a horizontal bar connecting the levers and provided with stops, at rec-tangular block arranged to slide on and f rictionu a 22' and "supported by :m;

brackets mount, 1 frame ztnd provided with depending vertico lly-disposed antifriction-wheels; offsettl *ith the :ofisettin'g r with stops, and

shifting d evice' arranged I to slideon and fri o tionally engage the snpportingsnrfeee, and r 1 provided with vertical guides :reeeiving the conneetmg-ber and located itfijELCG-H t' stops, C!

a and locztt said he: colnbinzttionofa1 sawmtll-icarrlage, nlerumedon of the earriegeend allyeng'age the floor or other supporting stn e5:

face, and the 'werticztlgnides' receiving :the

rizontal bar and arra-ng stops,-a-nd comprising ve: 1on1 bars, baseplates and in 01in edbraees sn'ppor tingthe v tioallb'ars,suhstantially'as descnbed. V

' Theeombination of' a savwniH-carriag ofisetting levers fulcrnmed intermediate 0 their' endson the axles and provided ettheir upper ends Withcamheads engaging the saw-I I mill-carriage frame, a horizontal bar eonnee ing the'dependingflpontions' of the let shiftingdeviceermnged to slide on and fro tionaliy engage "the snppertingesurfaee and I provided with vertical guides J receiving the r the f gains horizontal her, "and means" for holdin horizontal berendtheshi t HlgdBs i'G long flinal movementxon stantmllyes'described; r Theeombinati'on of eawnk (1 1011 the sawmillcarriage levers iu loremed intermediateof; their ends 011th?) axles andprovided elrnpper ends with cam-heads engaging 1e" antifrietion wheelsyst horizontal bar connecting the do each other, en o Isadj eentato theQ carriage,

pending portions ofithe offsettingleverg and i 3111' tmgdevie tionaliy conga providedwith' sto 5, mt: ztrrang'ed' to-slide :on L nd 7 the'7supportingfeurfeee endiproviided with ver tie ed .geides rec eivin g horizontal '1' I adjsteentito sa steps; where the. bar en thesehiftmg devlce ere prevente novn ehorizontally on em other sub- I r I mlly zt described; V

' In testimonythetlclann the foregoing a e the presence of two witnesses.

PHILLIP J. BUCK. it-messes:

ALVAH A.'DICKERSON, JOHN HILL.

I my. own I have hereto a-ffixedmy signature in 

